Here is one of many SCAMs through the U.S MAIL.
BEWARE this could be you or your company:
I received an envelope from AG INVESMENTS with a Canadian address. When I opened it a check for the amount of $2980.00 fell out from READING FOUNDRY & CO out PA. The heading on the letter; UNITED CONSUMER SWEEPSTAKES, Group Publishers Sweepstakes out of Uniondale, NY. The letter stated that I needed to claim this prize within 3 weeks by calling 450-675-6849 and pay 10% of my winnings.
I googled all 3 companys and the bank and found they were all legit. After calling the phone # getting a recording and leaving a message; I got no reply. So I called the company on the check and the secretary told me it was bogus and that they had received many of those.
If you receive a check in the mail for any amount "GOOGLE IT"! You can find all the info you need to know it is scam.